Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758302Ab3GZJMS (ORCPT ); Fri, 26 Jul 2013 05:12:18 -0400 Received: from www.linutronix.de ([62.245.132.108]:35354 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757993Ab3GZJMN (ORCPT ); Fri, 26 Jul 2013 05:12:13 -0400 From: Sebastian Andrzej Siewior To: Felipe Balbi Cc: Bin Liu , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, george.cherian@ti.com, Sebastian Andrzej Siewior Subject: [PATCH 06/16 => 2/2] usb: musb: dsps: remove EOI access Date: Fri, 26 Jul 2013 11:11:38 +0200 Message-Id: <1374829898-3635-2-git-send-email-bigeasy@linutronix.de> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1374829898-3635-1-git-send-email-bigeasy@linutronix.de> References: <20130725161120.GC31835@radagast> <1374829898-3635-1-git-send-email-bigeasy@linutronix.de> X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001,URIBL_BLOCKED=0.001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2606 Lines: 83 The EOI register is not present in the AM335x memory space according to the TRM and thus removed. Should any platform using the EOI register get merged then it may be used again if the register address is not zero. Signed-off-by: Sebastian Andrzej Siewior --- drivers/usb/musb/musb_dsps.c | 15 ++------------- 1 file changed, 2 insertions(+), 13 deletions(-) diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 28ed497..36634e9 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -73,7 +73,6 @@ struct dsps_musb_wrapper { u16 revision; u16 control; u16 status; - u16 eoi; u16 epintr_set; u16 epintr_clear; u16 epintr_status; @@ -202,7 +201,6 @@ static void dsps_musb_disable(struct musb *musb) dsps_writel(reg_base, wrp->epintr_clear, wrp->txep_bitmap | wrp->rxep_bitmap); dsps_writeb(musb->mregs, MUSB_DEVCTL, 0); - dsps_writel(reg_base, wrp->eoi, 0); } static void otg_timer(unsigned long _musb) @@ -316,7 +314,7 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) /* Get usb core interrupts */ usbintr = dsps_readl(reg_base, wrp->coreintr_status); if (!usbintr && !epintr) - goto eoi; + goto out; musb->int_usb = (usbintr & wrp->usb_bitmap) >> wrp->usb_shift; if (usbintr) @@ -384,16 +382,11 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) if (musb->int_tx || musb->int_rx || musb->int_usb) ret |= musb_interrupt(musb); - eoi: - /* EOI needs to be written for the IRQ to be re-asserted. */ - if (ret == IRQ_HANDLED || epintr || usbintr) - dsps_writel(reg_base, wrp->eoi, 1); - /* Poll for ID change */ if (musb->xceiv->state == OTG_STATE_B_IDLE) mod_timer(&glue->timer[pdev->id], jiffies + wrp->poll_seconds * HZ); - +out: spin_unlock_irqrestore(&musb->lock, flags); return ret; @@ -447,9 +440,6 @@ static int dsps_musb_init(struct musb *musb) val &= ~(1 << wrp->otg_disable); dsps_writel(musb->ctrl_base, wrp->phy_utmi, val); - /* clear level interrupt */ - dsps_writel(reg_base, wrp->eoi, 0); - return 0; err0: usb_put_phy(musb->xceiv); @@ -746,7 +736,6 @@ static const struct dsps_musb_wrapper am33xx_driver_data = { .revision = 0x00, .control = 0x14, .status = 0x18, - .eoi = 0x24, .epintr_set = 0x38, .epintr_clear = 0x40, .epintr_status = 0x30, -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/